3. Matter is made up of particles whose properties determine the observable characteristics of matter and its reactivity.

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MAJOR UNDERSTANDINGS

3.1a Matter takes up space and has mass. Two objects cannot occupy the same place at the same time.
3.1b Matter has properties (color, hardness, odor, sound, taste, etc.) that can be observed through the senses.
3.1c Objects have properties that can be observed, described, or measured
3.1dMeasurements can be made with standard metric units and nonstandard units.
3.1e The material(s) an object is made up of determine some specific properties of the object (sink, float, conductivity, magnetism).

3.1f Objects or materials can be sorted or classified according to their properties.
3.1g Some properties of an object are dependent on the conditions of the present surroundings in which the object exists.
3.2a Matter exists in three states

3.2b Temperature can affect the state of matter of a substance.
3.2c Changes in the properties or materials of objects can be observed and described.